Mortar Mixer Help

Getting the mortar mix right is important.

Mortar is a mix of cement or lime with sand and water. Hydration, a chemical reaction, provides the strength of a well-mixed mortar. Although mortar becomes hard after about 24 hours, it can take some months to reach its full strength. Mixing can be done by hand or with mechanical equipment.

Portable Mixers

For small- to medium-size jobs, a large bucket or oil drum with a portable electric paddle mixer, such as the Unitec, is the best alternative. It is possible to mix a batch of up to 200 pounds of mortar with a portable mixer.

Larger Batch Mixers

For mortar mixes of up to 290 pounds, an all-in-one solution such as the Portamix Hippo with twin paddles has the advantage of a balanced tilting cradle that aids the emptying process. The Portamix has a choice of electric or pneumatic power. Though it is a more expensive solution, a unit such as this one can increase productivity and lower labor costs.

Safety Considerations

Prolonged contact between cement or powdered lime and your skin can cause burning, so wear protective gloves when handling those items. Wear safety glasses when mixing powders with water to avoid damage to your eyes.

References

• Portland Cement Association: Concrete Basics
• C S Unitec: Power Tools For Construction
• C S Unitec: Mixing Stations for Mixing, Transporting and Pouring
• Paving Expert: Mortars